Refer to ETSI TS 102 250-2 V2.2.1 (2011-04) Page 225
SMS Completion
Ratio
Definition: The SMS Completion Ratio is the ratio of successfully received and sent messages
from the sending user equipment to the receiving user equipment, excluding duplicate received
and corrupted messages.
Equation:
Where:
Refer to ETSI TS 102 250-2 V2.2.1 (2011-04), Page 228
Note 4: A corrupted SMS is an SMS with at least one bit error in its message part
SMS End-to-End
Delivery Time [s]
Definition: The SMS end-to-end delivery time is the time period between sending a short
message to the network and receiving the very same short message at another UE.
Equation:
Refer to ETSI TS 102 250-2 V2.2.1 (2011-04), Page 230
DATA SERVICE
Attach failure ratio
Definition: The attach failure ratio denotes the probability that a subscriber cannot attach to
the PS network.
Equation:
ETSI TS 102 250-2 V2.2.1 (2011-04)
Attach Setup time
Definition:The attach setup time describes the time period needed to attach to the PS network
Equation:
ETSI TS 102 250-2 V2.2.1 (2011-04)
PDP Context
Activation Failure
Definition:The PDP context activation failure ratio denotes the probability that the PDP
context cannot be activated. It is the proportion of unsuccessful PDP context activation
Regulations for Quality of Service of Cellular Mobile and Fixed Networks Services (Voice ,SMS and 3G Data Services )
13